Modeling multilayered wire strands, a strategy based on 3D finite element beam-to-beam contacts - Part II: Application to wind-induced vibration and fatigue analysis of overhead conductors

Lalonde, Sébastien; Guilbault, Raynald; Langlois, Sébastien

doi:10.1016/j.ijmecsci.2016.12.015

Cited by 43 publications

(31 citation statements)

References 17 publications

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“…Other lifetime prediction modelling approaches implement the strain-life fatigue method to estimate the lifetime using the calculated maximum bending strain (εa) of the structure. Such a method is well-established by the Coffin-Manson model [38], which consider the plastic deformation (εi) of different metallic alloys using the exponents (b) and (c), as expressed in (5).…”

Section: Modelling Methods For Estimation Of Conductor Lifetimementioning

confidence: 99%

“…Such simplified homogenized approaches neglect the conductor's interstitial interactions. One of the most recent computer modelling attempts considers conductor complex geometry by using the beam-tobeam contact elements in ANSYS [38]. Others introduced an elasto-plastic numerical FEM approach to model round-strand shaped conductors [45].…”

Section: Review Of Conductor Geometry Modelling Effortsmentioning

confidence: 99%

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Modeling Multi-Layer OHL Conductors Undergoing Wind-Induced Motion

AlAqil

Kopsidas

2020

IEEE Access

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Utilities aim to improve asset management strategies and enhance the utilization of their assets through low-risk reliable practices. Overhead lines and conductor designs have been evolving to increase systems' power capacity and mechanical integrity, which have also extended asset lifetimes. Nevertheless, it is still challenging to predict a conductor's fatigue stresses due to wind-induced vibrations that can help to estimate its useful life. A finite element model (FEM) has been established in COMSOL to study the free and forced wind-induced vibrations and the resultant fatigue on single multi-layer conductors considering their complex round and trapezoidal stranding patterns. The FEM analysis is based on multi-physics accounting for the conductor's thermal and mechanical aspects as well as material and geometry properties. Consequently, the fatigue is quantified for both inter-layer and inter-wire interactions. The simulations show that free conductor vibrations are dictated by the conductor materials and tension distribution between the core and aluminum strands. The bigger the difference between the material properties of the core and aluminum, the lesser the conductor vibrations, especially when the aluminum becomes slack. In fact, a conductor equipped with carbon core (ACCC), has the best vibration resistance among other conductors with steel core (ACSR) and homogeneous (AAACs). Forced vibration simulations identified non-linear fatigue stresses for round and trapezoidal designs, which is more pronounced in larger conductor sizes. Larger trapezoidal ACSRs exhibit better fatigue resistance compared to smaller and round stranded AAACs.

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Section: Modelling Methods For Estimation Of Conductor Lifetimementioning

confidence: 99%

Section: Review Of Conductor Geometry Modelling Effortsmentioning

confidence: 99%

Modeling Multi-Layer OHL Conductors Undergoing Wind-Induced Motion

AlAqil

Kopsidas

2020

IEEE Access

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“…Although the correctness of this method has been proved, its application was still limited to single or double layers with a small displacement. Lalonde et al [19,20] proposed a finite element modeling method for multi-layer steel strands under multi-axial loads. This method utilizes a beam element and a three-dimensional line contact, which greatly reduce the computational complexity of the model under the premise of ensuring a high level of accuracy.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Modeling and Stress Analysis of a Six-Splitting Mid-Phase Jumper

Han

et al. 2020

Applied Sciences

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In this study, a finite element, fully three-dimensional solid modeling method was used to study the mechanical response of a steel-cored aluminum strand (ACSR) with a mid-phase jumper under wind load. A whole model (simplifying an ACSR into a solid cylinder) and a local model (modeling according to the actual structure of an ACSR) of the mid-phase jumper were established. First, the movement of the mid-phase jumper of the tension tower under wind load was studied based on the whole finite element model, and the equivalent Young’s modulus of the whole model was adjusted based on the local model. The results of the whole model were then imported into the local model and the stress distribution of each strand of the ACSR was analyzed in detail to provide guidance for the treatment measures. Therefore, the whole model and the local model complemented each other, which could reduce the number of model operations and ensure the accuracy of the results. Through the follow-up test to verify the results of the finite element simulation and the comparison of the simulation and fatigue test results, the causes of the broken strand of the ACSR were discussed. Although this modeling method was applied to the stress and deformation analysis of a mid-phase jumper in this study, it can be used to study the bending deformation of rope structures with a complex geometry and the main bending deformation. In addition, the effect of the friction coefficient on the bending of the mid-phase jumper was studied.

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“…High voltage transmission lines and grid can experience vulnerabilities such as vibration, electromagnetic transients, fatigue, transmission loss, switching surges, conductor sag fluctuation [30,31]. When the conductor experiences vibration, the transmission lines experience high amplitudes of vibrations from wind forces and can lead to fatigue of the transmission lines [1].…”

Section: Introductionmentioning

confidence: 99%

High Voltage Transmission Line Vibration: Using MATLAB to Implement the Finite Element Model of a Wind-Induced Power-Line Conductor Vibration

Onunka¹,

Ojo²

2018

MATLAB - Professional Applications in Power System

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Wind-induced vibration affects the performance and structural integrity of high voltage transmission lines. The finite element method (FEM) is employed to investigate windinduced vibration in MATLAB. First, the FEM model was used to develop the equation of motion of the power line conductor. In addition, dampers, conditions for damping, free and forced vibrations of the overhead conductor were considered in the FEM model. Wind-induced experiments were conducted in the laboratory using an actual overhead power conductor. The developed FEM models were simulated in the MATLAB computing environment. The results from the MATLAB simulation, finite element and experimental recordings were compared in order to evaluate the efficacy of models simulated in MATLAB and developed using the FEM.

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Modeling multilayered wire strands, a strategy based on 3D finite element beam-to-beam contacts - Part II: Application to wind-induced vibration and fatigue analysis of overhead conductors

Cited by 43 publications

References 17 publications

Modeling Multi-Layer OHL Conductors Undergoing Wind-Induced Motion

Modeling Multi-Layer OHL Conductors Undergoing Wind-Induced Motion

Finite Element Modeling and Stress Analysis of a Six-Splitting Mid-Phase Jumper

High Voltage Transmission Line Vibration: Using MATLAB to Implement the Finite Element Model of a Wind-Induced Power-Line Conductor Vibration

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